Receptacles – Sectional – Knockdown
Patent
1994-12-20
1996-03-12
Moy, Joseph M.
Receptacles
Sectional
Knockdown
220440, 220442, 220669, 220670, B65D 9004
Patent
active
054978955
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
The invention relates to a transport container in cuboid form according to the precharacterizing clause of claim 1.
Such transport containers, in particular in the form of pallet containers, are used to send goods and after being emptied are to be returned to the sender for refilling. These transport containers must thus be lightweight and nevertheless have long-term stability. The stability requirements are especially high when the contents of the container are vulnerable to shock and impact. This applies to an even greater extent when dangerous fluids are to be transported. Then the transport container is required to protect an inner container (usually made of plastic) in its interior from damage.
Such a transport container has been disclosed in Wo 89/11 422. This transport container is collapsible. The walls of this known transport container are made of plywood. DE-AS 1 049 784 discloses a transport container of the same kind, the walls of which consist of hardboard. Another transport container of this kind is disclosed in EP 29 229 A1, wherein the walls are to be "lightweight panels" the construction of which is not described, which are intended to ensure a stable but nevertheless lightweight structure owing to a particular design of frame components.
The known transport containers present the problem that although their weight is relatively high, the walls are insufficiently strong and, in particular, can break apart under impact.
DE 41 18 857 A1 discloses a container that consists of individual boxes nested one inside another. This transport container is extremely elaborate and also heavy.
G 85 26 838 U1 discloses a collapsible container, the frame parts of which are designed as outwardly projecting members, U-shaped in cross section, to receive panels of plywood or cardboard. One such member of all floor and cover frames includes an inwardly projecting ridge designed to press into the panel material when the cover and floor are in place. The cover and the floor, each consisting of a panel and a frame enclosing the periphery of the panel, are not intended to be taken apart; only the four side walls of the container are to be inserted between the members of the vertical frame parts, which are not provided with such ridges, so as to allow elastic torsion of the container within certain limits. A transport container of this kind, however, is not suitable for receiving bulk material or plastic containers (liners) to hold fluids, because the hydrostatic pressure will cause the container to burst due to the inadequate connection between side panels and side frame parts, unless the frame parts are made extremely stable and hence heavy, or are joined together by other means.
The present invention is directed to the problem of developing a collapsible transport container of the kind described above in such a way that high, long-term stability can be attained with simple construction.
This problem is solved by a transport container according to claim 1. A method of manufacturing the transport container is given in claim 15.
By fabricating the walls of sandwich panels (known per se) with a honeycomb core, surprising advantages are achieved. The sandwich panels have been found to sustain quite considerable impacts and shocks, or to convert these impulses into energy of deformation of the honeycomb core, without breaking apart, so that the contents of the transport container remain undamaged. If there is an impact on such a transport container, it exhibits local, external deformation but can nevertheless continue to be used. The probability that exactly the same place will be struck again, so that the transport container breaks owing to a lack of damping capacity at this place, is extremely small. An extension of the deformation such as can occur, for example, when simple sheet metal panels are used, is excluded in the case of these sandwich panels.
The walls are form-fitted to the frame parts. For this purpose grooves are recessed into the walls parallel to their edges, into which are inserted ridge
REFERENCES:
patent: 2100895 (1937-11-01), Austin
patent: 2958442 (1960-11-01), Lorentzen
patent: 3510278 (1970-05-01), Alleaume
patent: 4266670 (1981-05-01), Mykleby
patent: 4366917 (1983-01-01), Kotcharian
Euro-Composites S.A.
Moy Joseph M.
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